Go to Google Earth. "Thomasville, Ga." There's a patch of land 30 x 20 miles to the SW. Note the absence of production fields, but a wad of smaller patches, food plots. Then travel down to Iamonia, FL, just below the Ga/FL line. Zoom in to an area; doesn't much matter where. You'll note checkerboarding. This is "blocking" which is usually 30 x 30 or 40 x 40 yards. Lanes are cut through the underbrush and grasses to allow food trails to be established for the wild birds. It also facilitates bird hunting. With two guns walking in different lanes with the dog handler flushing, it's a safe approach to the covey. This is just a sampling of the scale of bird plantations near Thomasville and Albany.